Flotation separation of enargite from complex copper concentrates by selective surface oxidation

• Autorzy: Li Tangfei , Zhang Yansheng , Zhang Bo , Jiao Fen , Qin Wenqing

Identyfikatory

DOI

10.5277/ppmp19005

• Języki publikacji: EN

Abstrakty

EN

In previous study, the promising results of separating enargite from non-arsenic copper sulfides were obtained using selective surface oxidation in pure mineral systems. However, this technology was not well understood in real ores or concentrates. In this study, the flotation separation of enargite from complex copper concentrates by selective surface oxidation was investigated. The effects of regrinding, pulp pH, NaClO concentration, conditioning time and flotation time on separation of enargite from NECu minerals were studied. The mineralogical characteristics of the flotation feed and products were showed as an instructive tool to understand the separation results. According to the results of EDTA extraction, the possible mechanism for separation of enargite from NECu minerals is that enargite is more resistant to oxidized compared to NECu minerals. The following order for the oxidation of NECu minerals and enargite is obtained: chalcopyrite (chalcocite, digenite)> enargite (covellite).

Słowa kluczowe

EN

mineralogy; enargite; selective surface oxidation; froth flotation; EDTA extraction

• Wydawca: Oficyna Wydawnicza Politechniki Wrocławskiej
• Czasopismo: Physicochemical Problems of Mineral Processing
• Rocznik: 2019
• Tom: Vol. 55, iss. 4
• Strony: 852--864
• Opis fizyczny: Bibliogr. 36 poz., rys.

Twórcy

autor

Li Tangfei

• School of Minerals Processing and Bioengineering, Central South University, Changsha 410083, China

autor

Zhang Yansheng

• School of Minerals Processing and Bioengineering, Central South University, Changsha 410083, China

autor

Zhang Bo

• School of Minerals Processing and Bioengineering, Central South University, Changsha 410083, China

autor

Jiao Fen

• School of Minerals Processing and Bioengineering, Central South University, Changsha 410083, China

autor

Qin Wenqing

• School of Minerals Processing and Bioengineering, Central South University, Changsha 410083, China

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Uwagi

Opracowanie rekordu ze środków MNiSW, umowa Nr 461252 w ramach programu "Społeczna odpowiedzialność nauki" - moduł: Popularyzacja nauki i promocja sportu (2020).